Risk Estimation Method of Small River Pollution-Supporting Capacity under Arbitrary Multi-point Generalization of Planning Sewage Outlets

Abstract

The invention relates to a method for estimating the risk of small-scale river pollution-holding capacity under arbitrary multi-point generalization of planned sewage outlets, which comprises the following steps: (1) Investigating and determining the initial cross-section position x of the sewage-holding river section and the planned sewage outlets on the river section The number n and its position, determine the number n' of the generalized sewage outlet and its position x relative to the initial section i ; (2) Measure and determine the position x' of the up-to-standard control section of the pollution-receiving river section, and the initial section pollutant concentration C 0 , measure the average flow velocity u of the river section, and the river flow Q; (3) determine the pollutant degradation coefficient k and its uncertainty α of the river section according to the measurement results; (4) determine the pollution of the control section according to the downstream water use standard Standard concentration of substances C s , to calculate the risk of pollution-holding capacity of the river section. The method of the invention is advanced and scientific, and the invention can effectively estimate the risk of the pollution-holding capacity of the river channel under the condition of arbitrarily planning the sewage outlet, and improve and enhance the management level of the water quality of the river channel.

Description

technical field [0001] The invention relates to a method for estimating the risk of a small-scale river channel's pollutant-holding capacity under arbitrary multi-point generalization of planned sewage outlets, and belongs to the field of river channel water quality management. Background technique [0002] The determination of river pollution-holding capacity is an important means of river water quality management. Whether the calculation result of river pollution-holding capacity is correct determines the level of river water quality management and the success of river water protection. In the process of calculating the sewage-holding capacity of a river, multiple sewage outfalls are often generalized into a single sewage outfall; The calculation does not take into account the uncertainty of the pollutant degradation coefficient and the deviation caused by the estimation of the pollution-holding capacity of the river, and the possible risks caused by it will have a very ad...

AI Technical Summary

Problems solved by technology

In the process of calculating the sewage-holding capacity of a river, multiple sewage outfalls are often generalized into a single sewage outfall; The calculation does not take into account the uncertainty of the pollutant degradation coefficient and the deviation caused by the estimation of the pollution-holding capacity of the river, and the possible risks caused by it will have a very negative impact on the protection of the water quality of the river.

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